TY  - BOOK
AU  - Ragan, Donal M.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
TI  - : an introduction to geometrical techniques
SN  - 471704814
SN  - 2
PY  - 1973///46
CY  - New York
PB  - Wiley
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Geology, Structural
N1  - Bibliography: p. 197-201; 5
ER  -